Liquid follow-on filling device and method

Abstract

The application discloses a liquid following type filling device and method, and the device comprises one or more groups of filling pipes, a linear module and a following motor. Liquid material to be filled is filled into a bag to be filled through the filling pipes. The one or more groups of filling pipes are installed on a fixed plate at equal distances. The following motor controls the lifting of the filling pipes and keeps the movement control independent of a bag traction device. Under the control of the following motor, the filling opening follows the downward movement of the bag to be filled, and the relative distance between the filling pipe opening and the liquid surface is kept as a small following distance. The scheme solves various problems caused by the too fast liquid filling speed of the filling opening during high-speed filling in the prior art, and achieves the beneficial effects of improving the filling and packaging speed of the liquid bag and ensuring the filling quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid strip bag packaging production equipment, in particular to a liquid following type filling device and method. BACKGROUND

[0002] Liquid strip bag packaging has been widely used in the fields of medicine, food, health care products, etc. Liquid strip bag packaging usually uses fixed filling.

[0003] The patent document with the application publication number CN113460382A discloses a filling pipe structure of a sauce packaging machine for preventing sauce from being clamped at the sealing opening of a sauce bag, which can fundamentally solve the problem of sauce dripping from the sauce pipe. The structure is simple, convenient and practical. The filling pipe structure of the sauce packaging machine for preventing sauce from being clamped at the sealing opening of a sauce bag. The technical scheme adopted is: the filling pipe structure of the sauce packaging machine for preventing sauce from being clamped at the sealing opening of a sauce bag, comprising a sauce pipe, the end of the sauce pipe is provided with a blowing mechanism for blowing the sauce on the port into the packaging bag, the blowing mechanism comprises a mounting sleeve sleeved on the end of the sauce pipe, the mounting sleeve is provided with a first air guide part for blowing vertically and a second air guide part for blowing horizontally.

[0004] With the advancement of technology, such packaging equipment is getting faster and faster, and with the expansion of the liquid strip bag market, fixed filling has become the main limitation of the speed-up of packaging equipment. The main reason is that because the filling pipe is fixed on the equipment, as the packaging speed increases, the speed of liquid coming out of the filling pipe will increase, and too high outlet speed will easily cause a large amount of foam of the liquid, and also cause too high back splash at the moment of contacting the bottom end of the strip bag, thereby causing quality risks such as strip bag clamping liquid or liquid leakage, and the outlet distance of the filling pipe of the fixed filling from the bottom of the strip bag is relatively far, and the back splash of the liquid will be higher. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a liquid following type filling device and method to solve the problems caused by the too fast filling speed of the liquid at the outlet of the filling pipe and other quality problems.

[0006] To achieve the above purpose, the present application is realized by the following technical scheme:

[0007] The liquid following type filling device comprises one or more groups of filling pipes through which liquid material to be filled is filled into a bag to be filled, a linear module and a following motor, the one or more groups of filling pipes are installed on a fixed plate between the sliders of the two rail beams of the linear module, the following motor controls the lifting of the filling pipes by controlling the lifting of the sliders and keeps relative independence from the movement control of the bag traction device, under the control of the following motor, the filling pipes keep still relative to the bag before the bag traction device drags the bag downward, the distance from the starting position of the filling pipes to the bottom of the bag to be filled is the initial distance, when the bag traction device drags the bag downward, the liquid material to be filled starts to enter the bag to be filled through the filling pipes, the filling pipes start to move downward, between the time when the bag is dragged to the final bag length, the liquid material to be filled continuously enters the bag to be filled through the filling pipes, the filling pipes move downward following the bag to be filled under the control of the following motor and keep the relative distance between the filling pipe opening and the liquid surface as the following distance, after the filling and filling of the required filling amount are completed, the filling pipes return to the initial position, the distance from the filling pipes to the bottom of the bag returns to the initial distance, and the qualified finished product filling complete bag is obtained, the outside of the filling pipes is also provided with a forming pipe for allowing the film to be formed, the fixed plate is provided with a vertical positioning groove, the fixed plate is installed with a clamping seat through the positioning groove, the clamping seat is installed with two clamping blocks, a vertical square groove is formed between the clamping seat and the clamping blocks, and the filling pipes are clamped and fixed on the fixed plate, the moving speed of the filling pipes, the speed of the equipment dragging the bag and the filling speed of the liquid are independently adjusted, and the movement process of the filling pipes, the movement process of the equipment dragging the bag and the filling process of the liquid material to be filled are controlled through a servo curve.

[0008] Preferably, a speed reducer is further connected between the following motor and the linear module.

[0009] Preferably, the linear module is a one-dimensional double-track synchronous structure, and further comprises a synchronous belt between the slider and the rail beam, and the synchronous belt of the linear module uses PU steel wire.

[0010] Preferably, an optoelectronic bracket is installed on the inner side of the rail beam of the linear module, an optoelectronic switch is installed on the optoelectronic bracket, an L-shaped detection plate is installed on the top of the fixed plate, and the bent end of the detection plate faces the optoelectronic switch.

[0011] Based on the same inventive concept, the scheme further provides a liquid following type filling method, which adopts the following steps:

[0012] S1 before the bag is dragged downward by the equipment, the filling pipes of the liquid following type filling device according to claim 1 are kept still relative to the bag to be filled, the distance from the starting position of the filling pipes to the bottom of the container of the bag to be filled is the initial distance, and the initial distance is determined according to the actual characteristics of the liquid material to be filled and debugging.

[0013] S2 when the device starts to pull the bag downward, the bag starts to move downward, the liquid to be filled starts to enter the bag to be filled through the filling pipe, the distance between the filling pipe and the liquid surface of the liquid to be filled is the moving distance, the moving distance gradually decreases, and the liquid to be filled starts to enter the bag to be filled through the filling pipe at the same time the filling pipe starts to move downward;

[0014] S3 while the filling pipe moves downward, the liquid to be filled continues to enter the bag to be filled through the filling pipe, in this process, the filling pipe moves downward following the bag, and the distance between the filling pipe and the liquid surface is the following distance;

[0015] S4 between the device pulling the bag to be filled to the final bag length, the liquid to be filled continues to enter the bag to be filled through the filling pipe, in this process, the filling pipe moves downward following the bag, and the relative distance between the filling pipe and the liquid surface is maintained;

[0016] S5 after completing the filling and filling of the required amount, the filling pipe returns to the initial position, and the distance between the filling pipe and the bottom of the container in the bag to be filled returns to the initial distance, at this time, the qualified finished product filled bag is obtained after filling and sealing.

[0017] The beneficial effects of the present application are that the speed of the filling pipe and the speed of the device pulling the bag are independent and adjustable, the movement process of the filling pipe and the filling process of the liquid are both controlled by a servo curve, and the foam can be further reduced. The liquid following type filling device of the present application follows the movement of the bag during the filling process, the distance between the liquid and the bottom of the bag can be shortened as much as possible during the liquid filling, and under the same pulling speed of the device, the outlet speed of the following type filling is lower than that of the fixed type filling, thereby greatly reducing the risk of liquid leakage caused by the splash of the filled liquid; the liquid filling speed, the action speed of the filling pipe, and the action of the device pulling the bag are all independently controlled by a servo, the control curve can be adjusted according to the actual situation, the filling pipe outlet keeps a fixed distance from the liquid surface during the filling process, and the stability of the liquid surface during the filling process is further ensured; the speed curve of the filling pipe, the speed curve of the filled liquid, and the speed curve of the device pulling the bag are all independent and adjustable, and can be applied to a variety of different liquid materials; under the premise of ensuring the quality of the liquid bag, the packaging speed of the liquid bag can be greatly improved, the filling foam can be greatly reduced, and multiple channels can be used in parallel; the use of the filling pipe clamping type installation method also solves the problem of scratching caused by the installation error between the filling pipe and the forming pipe during the following movement, and the concentricity of the two pipes can be easily adjusted when a problem occurs. In summary, the use of the device improves the filling and packaging speed of the liquid bag packaging to meet the market demand. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The flowchart of the liquid following type filling method is shown in the figure.

[0019] Figure 2 Figure 1 is a perspective view of an embodiment of the liquid following filling device;

[0020] Figure 3 Figure 2 is a perspective view of another embodiment of the liquid following filling device;

[0021] Wherein, 1 is a filling pipe, 2 is a to-be-filled bag, 3 is a filled bag, 4 is a to-be-filled liquid material, 5 is a linear module, 51 is a track beam, 52 is a sliding block, 53 is a synchronous belt, 6 is a speed reducer, 9 is a detection plate, 10 is a photoelectric switch, 11 is a photoelectric support, 12 is a forming pipe, 13 is a joint, 14 is a clamp, 15 is a following motor, 16 is a fixed plate, 17 is a clamping seat, 18 is a clamping block, L is an initial distance, L1 is a movement distance, and L2 is a following distance. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0023] The embodiment provides a technical solution: a liquid following filling device, which comprises ten groups of filling pipes 1 and a linear module 5 and a following motor 15, a to-be-filled liquid material 4 is filled into a to-be-filled bag 2 through the filling pipe 1, the ten groups of filling pipes 1 are all installed on the fixed plate 16 between the sliding blocks 52 of the two track beams 51 of the linear module 5, the fixed plate 16 is directly or indirectly installed on the two sliding blocks 52, the following motor 15 controls the lifting of the filling pipe 1 by controlling the lifting of the sliding block 52 and keeps relative independence from the movement control of the bag traction device, under the control of the following motor 15, the filling pipe 1 keeps still relative to the bag before the bag traction device drags the bag downward, so that the distance from the initial position of the filling pipe 1 to the bottom of the to-be-filled bag 2 is the initial distance L; when the bag traction device drags the whole bag downward, the to-be-filled liquid material 4 starts to enter the to-be-filled bag 2 through the filling pipe 1, at this time, the distance from the pipe opening of the filling pipe 1 to the liquid surface is the movement distance L1, the to-be-filled liquid material 4 starts to enter the to-be-filled bag 2 through the filling pipe 1 at the same time, and the filling pipe 1 starts to move downward; between the time when the bag is dragged to the final bag length and the time when the to-be-filled liquid material 4 continuously enters the to-be-filled bag 2 through the filling pipe 1, the filling pipe 1 moves downward following the to-be-filled bag 2 under the control of the following motor 15, and keeps the relative distance between the pipe opening of the filling pipe 1 and the liquid surface as the following distance L2; after the filling and filling of the required amount are completed, the filling pipe 1 returns to the initial position, the distance from the filling pipe 1 to the bottom of the bag returns to the initial distance L, and a qualified finished product, a filled bag 3, is obtained.

[0024] The follow-up motor 15 is further connected with a speed reducer and a linear module 5. The linear module 5 is a one-dimensional double-track synchronous structure, comprising two parallel track beams 51, a sliding block 52 mounted on the track beams 51, and a synchronous belt 53 between the sliding block 52 and the track beams 51. The synchronous belt of the linear module uses PU steel wire. In the embodiment, the sliding block 52 is directly mounted with a fixed plate 16 for mounting the filling pipe 1. Indirect mounting and fixing can also be adopted, for example, one end of a horizontal plate is fixed on the sliding block 52, the other end of the horizontal plate is connected with one end of a side plate, and the other end of the side plate is connected with the end of the fixed plate, so that the fixed plate 16 and the sliding block 52 are in different vertical planes.

[0025] In order to better control the position of the vertical movement of the filling pipe 1, an optoelectronic bracket 11 is further mounted on the inner side of one track beam 51 of the linear module. Three optoelectronic switches 10 are mounted on the optoelectronic bracket 11. An L-shaped detection plate 9 is further mounted on the top of the fixed plate 16 corresponding to the position of the optoelectronic switches. The bent end of the detection plate 9 faces the optoelectronic switches 10.

[0026] A forming pipe 12 for forming the film is further mounted on the outside of the filling pipe 1. A joint 13 is connected with the top of the filling pipe 1 through a clamp 14. The joint 13 can be a direct joint or a 45-degree joint. In the embodiment, a direct joint is used.

[0027] In order to ensure that the filling pipe 1 and the forming pipe 12 on the outside do not collide during the following process, the concentricity of the filling pipe 1 and the forming pipe 12 on the outside needs to be maintained. In one embodiment of the device, a mounting mode of the filling pipe 1 and the fixed plate 16 is adopted. A vertical positioning groove is formed on the fixed plate 16. A clamping seat 17 is mounted through the positioning groove. The filling pipe 1 is clamped and fixed on the fixed plate 16 through the upper and lower clamping blocks 18. A vertical square groove is formed between the clamping seat 17 and the clamping block 18. The straightness of the installation of the filling pipe 1 can be maintained. When the forming pipe 12 is installed with deviation, the concentricity of the filling pipe 1 and the forming pipe 12 on the outside can be achieved through slight swinging and forward and backward adjustment of the filling pipe 1.

[0028] The speed of the filling pipe 1 and the speed of the device for pulling the strip bag and filling the liquid are independent and adjustable. The movement process of the filling pipe 1 and the device for pulling the strip bag and the filling process of the liquid material 4 to be filled are both controlled through a servo curve. That is, the traction motor, the filling motor and the follow-up motor 15 are all controlled through independent servo control.

[0029] Based on the same inventive concept, the scheme further provides a liquid following type filling method. In one embodiment, the following steps are adopted:

[0030] S1, before the device starts to pull the bag down, the filling pipe 1 of the liquid following filling device is static relative to the to-be-filled bag 2, the distance from the initial position of the filling pipe 1 to the bottom of the to-be-filled bag is the initial distance L, which is determined according to the characteristics of the to-be-filled liquid material 4;

[0031] S2, when the device starts to pull the bag down, the bag starts to move down, the to-be-filled liquid material 4 starts to enter the to-be-filled bag 2 through the filling pipe 1, the distance from the nozzle of the filling pipe 1 to the liquid surface of the to-be-filled liquid material 4 is the moving distance L1, the moving distance L1 gradually decreases, and the to-be-filled liquid material 4 starts to enter the to-be-filled bag 2 through the filling pipe 1 while the filling pipe 1 starts to move down;

[0032] S3, while the filling pipe 1 moves down, the to-be-filled liquid material 4 continues to enter the to-be-filled bag 2 through the filling pipe 1, in this process, the filling pipe 1 moves down following the bag, so that the distance from the nozzle of the filling pipe 1 to the liquid surface of the to-be-filled liquid material 2 is the following distance L2;

[0033] S4, between the time when the device pulls the to-be-filled bag 2 to the final bag length and the time when the to-be-filled liquid material 4 continues to enter the to-be-filled bag 2 through the filling pipe 1, in this process, the filling pipe 1 moves down following the bag, and the relative distance between the nozzle of the filling pipe 1 and the liquid surface is kept;

[0034] S5, after the filling and filling of the required amount are completed, the filling pipe 1 returns to the initial position, and the distance from the nozzle of the filling pipe 1 to the bottom of the to-be-filled bag 2 container is returned to the initial distance L, at this time, the qualified finished product filled bag 3 is obtained after the filling and sealing are completed.

[0035] The above is only a preferred specific embodiment of the present application, but the protection scope required by the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A liquid following filling device, comprising one or more sets of filling tubes (1), wherein the liquid material (4) to be filled is filled into the strip bag (2) to be filled through the filling tubes (1), characterized in that: It also includes a linear module (5) and a follower motor (15). The one or more sets of filling tubes are all mounted on a fixed plate (16) between the sliders (52) of the two rail beams (51) of the linear module (5). The follower motor (15) controls the lifting and lowering of the filling tube (1) by controlling the lifting and lowering of the slider (52) and keeps it relatively independent from the motion control of the strip bag traction device. Under the control of the follower motor (15), the filling tube (1) remains stationary relative to the strip bag before the strip bag traction device pulls the strip bag down, so that the filling tube (1) The initial distance from the starting position to the bottom of the strip bag (2) to be filled is the initial distance; when the strip bag traction device pulls the strip bag downward, the liquid material (4) to be filled begins to enter the strip bag (2) to be filled through the filling pipe (1), and the filling pipe (1) begins to move downward, so that the distance from the filling pipe opening to the liquid surface of the liquid material (4) to be filled is the movement distance L1, and the movement distance L1 gradually decreases; between the strip bag being pulled to the final bag length, the liquid material (4) to be filled continues to enter the strip bag (2) to be filled through the filling pipe (1), and the filling pipe (1) Under the control of the following motor (15), the filling tube (1) moves downward following the strip bag (2) to be filled, and maintains the relative distance between the filling tube opening and the liquid surface as the following distance; after the filling of the required amount is completed, the filling tube (1) returns to the initial position, and the distance between the bottom of the strip bag and the bottom of the strip bag returns to the initial distance, thus obtaining a qualified finished filled strip bag (3) that has been filled and sealed; a forming tube (12) for forming the roll film is also installed on the outside of the filling tube (1); a vertical positioning groove is opened on the fixing plate (16), and the fixing plate (16) is positioned by the positioning groove. A clamping seat (17) is installed in the slot. Two clamping blocks (18) are installed on the clamping seat (17). A vertical square groove is formed between the clamping seat (17) and the clamping blocks (18). The clamping blocks (18) clamp and fix the filling tube (1) on the fixing plate (16). The moving speed of the filling tube (1), the speed of the equipment traction bag, and the filling speed of the liquid are adjusted independently. The movement process of the filling tube (1), the movement process of the equipment traction bag, and the filling process of the liquid material (4) to be filled are all controlled by the servo curve.

2. The liquid-following filling device according to claim 1, characterized in that: A speed reducer (6) is also connected between the follower motor (15) and the linear module (5).

3. The liquid-following filling device according to claim 1, characterized in that: The linear module (5) is a one-dimensional dual-track synchronous structure, and also includes a synchronous belt (53) between the slider (52) and the rail beam (51). The synchronous belt of the linear module (5) uses PU steel wire.

4. The liquid-following filling device according to claim 1, characterized in that: A photoelectric bracket (11) is installed on the inner side of the rail beam (51) of the linear module (5), and a photoelectric switch (10) is installed on the photoelectric bracket (11). An L-shaped detection plate (9) is installed on the top of the fixing plate (16), and the bent end of the detection plate faces the photoelectric switch (10).

5. A liquid-following filling method, characterized in that... The following steps are used: Before the equipment pulls the strip bag down, the filling pipe (1) of the liquid following filling device according to claim 1 is stationary relative to the strip bag (2) to be filled. The distance from the starting position of the filling pipe (1) to the bottom of the container of the strip bag (2) to be filled is the initial distance L, which is determined by adjusting according to the characteristics of the actual liquid material (4) to be filled. When the equipment starts to pull the strip bag downwards, the strip bag begins to move downwards. The liquid material (4) to be filled begins to enter the strip bag (2) to be filled through the filling pipe (1), so that the distance from the filling pipe opening to the liquid surface of the liquid material (4) to be filled is the movement distance L1. The movement distance L1 gradually decreases. At the same time that the liquid material (4) to be filled begins to enter the strip bag (2) to be filled through the filling pipe (1), the filling pipe (1) begins to move downwards. As the filling tube (1) moves downward, the liquid material (4) to be filled continues to enter the strip bag (2) to be filled through the filling tube (1). During this process, the filling tube (1) moves downward with the strip bag, so that the distance between the filling tube opening and the liquid surface of the liquid material to be filled is the following distance L2. S4 During the process of the equipment pulling the strip bag (2) to be filled to the final bag length, the liquid material (4) to be filled continuously enters the strip bag (2) through the filling pipe (1). During this process, the filling pipe (1) moves downward with the strip bag and maintains the relative distance between the filling pipe opening and the liquid surface. After the required filling volume is completed, the filling tube (1) returns to its initial position and the distance between it and the bottom of the container of the strip bag (2) to be filled returns to the initial distance. At this time, a qualified finished product filled strip bag (3) is obtained after filling and sealing.

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